Roller-skate



H. A. WILBUR.

ROLLER SKATE.

FIGJ..

HENRY A. WILBUB, OF WEST SOMEBVILLE, ASSIGNOR OF ONE-HALF TO FRANK V.LOWE, OF BOSTON, MASSACHUSETTS.

ROLLER-SKATE.

SPECIFICATION forming part of Letters Patent No. 300,745, dated June 17,1884.

Application filed April 28, 1884. (No model.)

To all whom it may concern.-

Be it known that I, HENRY A. W1LBUn,'a

citizen of the United States, residing at West Somerville, in the countyof Middlesex and State of Massachusetts, have invented certain new anduseful Improvements in Boller- Skates, of which the following is aspecification.

My invention relates to an improved means for adapting the frame of aroller-skate toan ice-skate, and also to a means for adj listing theelastic bearings, so as to compensate for the wear of the rollers inroller-skates.

Referring to the accompanying drawings, Figure l isa side View of aroller-skate embodying my invention. Fig. 2 is a top or plan view of thesame. Fig. 3 shows one of the sides of the frame as cut or cast. Fig. 4is aside view of thehanger andbearings. Fig. 5 is a section of thesameonthe linexx. Figs.

6 and 7 show a means for adapting the frame to a wooden bottom of an iceor roller'skate. Fig. 8 shows the frame as adapted to an icerunner.

A A represent the frame, composed of two plates of metal cut out fromasheet, or cast, as shown in Fig. 3, with the tangs a aa.

B is a bridge-plate for supporting the soleplate, and C is a toe-platebracket, each being firmly secured to the frame A A, and D is theheel-plate attached to the frame A A.

E is ahanger in whichis supported the journal-bearing and the elasticsprings G G. In the upper part ofthe hanger E is a slot, e, as shown.The hanger E is inserted in the space between the two plates A A, and issecured therein' by means of a bolt and nut, as shown at L. By means ofthe slot e the hanger E, together with the rollers and their bearings,may be adjusted to boots or shoes of different sizes to the extent ofthe length of the slot. Vithin the hanger E is hung, by means of a pin,J, the journal-bearing F, that carries the axles of the rollers. In arecess in the bearing F are placed two rubber blocks, G G, on

the upper ends'oi` which are placed washers II H I Iare screws whichpass through projecting sides of the hanger E and bear upon the washersII, by which means either of the rubber blocks may be more or lesscompressed as required to compensate for the wear of the rollers.

In the use of roller-skates in skating-rinks it is found that therollers on one side of the skate are liable to become much more wornaway than those on the other side, owing to various causes. In such casethe rollers become useless and new rollers have to be provided. By meansof compressing either of the rubber blocks or springs, as abovedescribed, I obviate the difficulty occasioned by the Wearing away ofthe rollers on one side of the skate by evening up or depressing oneside, to compensate for the wear.

The springs G G, instead of heilig made of rubber, as shown, may be ofcoiled wire or any other suitable elastic material.

More than two parallel bars, A A, may be employed, if found desirable.

The toe-plate bracket C, bridge-plate B, and heel-plate D are secured tothe plates or frame A A by means of the tangs'a a c, which are rivetedto the said plates.

When an ice-skate is required, it is only necessary to take out thebolts L and remove the hangers E E, and then insert the projections onupper edge of the skate-iron M, using the same bolts and nuts asemployed in the rollerskate, as indicated in Fig. 8.

What I claim as my invention is- 1. The yframe A A, composed of twometal plates having a space between, in combination with a hangervcapable of being adj usted lengthwise of the frame, as and for thepurpose set forth. l

2. The adjustable springs G G, arranged one on either side of thehangers E, in combination with the bearings F, substantially as and forthe purpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY A. WILBUR.

Witnessesr v JosEPH II. ADAMs,

E. PLANTA.

